Question about 1989 Chevrolet C/K 2500

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Got a chevrolet pick up 1989 year 5.7L engine,it

I have a chevrolet pick up 1989 year 5.7L engine,it was it running rough when it idle,my mechanic check that no# 2,8,5,3 is missing,we replace all spark plug,spark wire,distributor cap and rotor,check all compression is 150psi,we replace inlet manifold gasket and check for vaccum leak but still the same

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CHECK THE CARB OR TDI MOUNTING BOLTS FOR TIGHTNESS OR CARB OR TBI GASKET LEAKING.COMPRESSION ACCEPTABLE YOU STILL HAVE INTAKE MANIFOLD LEAK. STOP UP FUEL FILTER.WEAK IGNITION COIL.WORN CAMSHAFT.

Posted on May 29, 2010

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Posted on Jan 02, 2017

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5.3 liter Chevy engine #1 Cylinder not firing at idle


My opinion...

Year? Miles?

There's no way I'd dive into a "HEAD GASKET"
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Even if it is a "HEAD GASKET"... the entire engine
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